91学习

#include <stdio.h>

void main(){

int grade[10]={95,85,45,78,68,91,90,55,48,80};

int total=0;

int i;

float avg;

for(i=0;i<10;i++){

total+=grade[i];

}

avg=((float)total/10);

printf("the student's average score is %f\n",avg);

}